8: Sparse Matrices
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- Apr 30, 2021
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( \newcommand{\kernel}{\mathrm{null}\,}\)
A sparse matrix is a matrix in which most of the entries are zero. Such matrices are very commonly encountered in finite-difference equations. For example, when we discretized the 1D Schrödinger wave equation with Dirichlet boundary conditions, we saw that the Hamiltonian matrix had the tridiagonal form
Hence, if there are
